Overview

Changing the ports through which endpoint devices download CrashPlan upgrade files can solve some firewall and performance problems. The default values vary with the version of the app and the authority server. This article describes how to use the administration console command-line interface to change the port.

Considerations

We recommend testing the upgrade on a single device before enabling automatic upgrades for all of your devices.

Select and change the upgrade port

There are two likely reasons to change the default ports through which endpoints retrieve upgrade files from authority servers:

The port is blocked at a firewall.

To avoid degrading performance of Code42 apps or authority servers, especially in large-scale Code42 environments where hundreds or thousands of endpoints upgrade simultaneously.

Default port assignments and the commands for changing the ports vary among Code42 server and Code42 app versions. The following describes the default ports and the alternatives. For more information about ports in your Code42 environment, see TCP And UDP Ports.

Code42 server version 5.2 and earlier

Upgrade Code42 apps to version 4.x

Default port:

4282

4282 is the standard port for messages between Code42 servers and Code42 app devices and is open in almost all Code42 environments.

But using 4282 for upgrades may temporarily interfere with backups.

Alternative port:

4280

4280 allows faster service than 4282, and using it for upgrades will not interfere with backup messages between server and endpoints. 4280 is often preferable in large-scale Code42 environments.

But 4280 is often closed at firewalls for security reasons. If the URL for your administration console includes port 4280, then upgrades may temporarily interfere with administration console performance.

Change the upgrade port at the authority server's command-line interface.

Upgrade Code42 apps to version 5.x

4280 allows faster service than 4282, and using it for upgrades will not interfere with backup messages between server and endpoints. 4280 is often preferable in large-scale Code42 environments.

But 4280 is often closed at firewalls for security reasons. If the URL for your administration console includes port 4280, then upgrades may temporarily interfere with administration console performance.

Alternative port:

4282

4282 is the standard port for messages between Code42 servers and Code42 app devices and is open in almost all Code42 environments.

But using 4282 for upgrades may temporarily interfere with backups.

Change the upgrade port at the authority server's command-line interface.

At the top of the command-line interface, enter one of these two commands:To use port 4282:prop.set b42.cpc.patch.useMessaging2 true saveTo use port 4280:prop.set b42.cpc.patch.useMessaging2 false save

At the top of the command-line interface, enter one of these two commands:To use port 4282:prop.set b42.cpc.patch.useMessaging true saveTo use the web port:prop.set b42.cpc.patch.useMessaging false save